[brcmfmac] Finish firmware mem map, fix heap start calculation bug.

This patch fixes the firmware memory map structure to be complete.
Along the way, we fix a failure to align the heap memory start address,
which causes failures with the newest apple wifi firmware.

With this patch, we can load the latest (sonoma 14.0 as of right now) apple wifi firmware.

Signed-off-by: Daniel Berlin <dberlin@dberlin.org>

Author: dberlin

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c

@@ -1861,35 +1861,58 @@ struct brcmf_rtlv_footer {
 	__le32 magic;
 };
 
-struct brcmf_fw_memmap {
-	u32 pad1[8];
-	u32 vstatus_start;
-	u32 vstatus_end;
-	u32 fw_start;
-	u32 fw_end;
-	u32 sig_start;
-	u32 sig_end;
-	u32 heap_start;
-	u32 heap_end;
-	u32 pad2[6];
+/** struct brcmf_fw_memmap_region - start/end of memory regions for chip
+ */
+struct brcmf_fw_memmap_region {
+	u32 start;
+	u32 end;
 };
 
+/** struct brcmf_fw_memmap
+ *
+ * @reset_vec - Reset vector - read only
+ * @int_vec - copied from ram, jumps here on success
+ * @rom - bootloader at rom start
+ * @mmap - struct/memory map written by host
+ * @vstatus - verification status
+ * @fw - firmware
+ * @sig - firwmare signature
+ * @heap - region for heap allocations
+ * @stack - region for stack allocations
+ * @prng - PRNG data, may be 0 length
+ * @nvram - NVRAM data
+ */
+struct brcmf_fw_memmap {
+	struct brcmf_fw_memmap_region reset_vec;
+	struct brcmf_fw_memmap_region int_vec;
+	struct brcmf_fw_memmap_region rom;
+	struct brcmf_fw_memmap_region mmap;
+	struct brcmf_fw_memmap_region vstatus;
+	struct brcmf_fw_memmap_region fw;
+	struct brcmf_fw_memmap_region sig;
+	struct brcmf_fw_memmap_region heap;
+	struct brcmf_fw_memmap_region stack;
+	struct brcmf_fw_memmap_region prng;
+	struct brcmf_fw_memmap_region nvram;
+};
 
 #define BRCMF_BL_HEAP_START_GAP		0x1000
 #define BRCMF_BL_HEAP_SIZE		0x10000
 #define BRCMF_RANDOM_SEED_MAGIC		0xfeedc0de
 #define BRCMF_RANDOM_SEED_LENGTH	0x100
-#define BRCMF_SIG_MAGIC			0xfeedfe51
+#define BRCMF_FW_SIG_MAGIC		0xfeedfe51
+#define BRCMF_NVRAM_SIG_MAGIC		0xfeedfe52
+#define BRCMF_MEMMAP_MAGIC		0xfeedfe53
 #define BRCMF_VSTATUS_MAGIC		0xfeedfe54
 #define BRCMF_VSTATUS_SIZE		0x28
-#define BRCMF_MEMMAP_MAGIC		0xfeedfe53
 #define BRCMF_END_MAGIC			0xfeed0e2d
 
-static int brcmf_alloc_rtlv(struct brcmf_pciedev_info *devinfo, u32 *address, u32 type, size_t length)
+static int brcmf_alloc_rtlv(struct brcmf_pciedev_info *devinfo, u32 *address, u32 type, u32 length)
 {
 	struct brcmf_bus *bus = dev_get_drvdata(&devinfo->pdev->dev);
-	u32 boundary = devinfo->ci->rambase + devinfo->fw_size +
-		BRCMF_BL_HEAP_START_GAP + BRCMF_BL_HEAP_SIZE;
+	u32 fw_top = devinfo->ci->rambase + devinfo->fw_size;
+	u32 ram_start = ALIGN(fw_top + BRCMF_BL_HEAP_START_GAP, 4);
+	u32 ram_end = ram_start + BRCMF_BL_HEAP_SIZE;
 	u32 start_addr;
 	struct brcmf_rtlv_footer footer = {
 		.magic = type,
@@ -1898,8 +1921,8 @@ static int brcmf_alloc_rtlv(struct brcmf_pciedev_info *devinfo, u32 *address, u3
 	length = ALIGN(length, 4);
 	start_addr = *address - length - sizeof(struct brcmf_rtlv_footer);
 
-	if (length > 0xffff || start_addr > *address || start_addr < boundary) {
-		brcmf_err(bus, "failed to allocate 0x%zx bytes for rTLV type 0x%x\n",
+	if (length > 0xffff || start_addr > *address || start_addr < ram_end) {
+		brcmf_err(bus, "failed to allocate 0x%x bytes for rTLV type 0x%x\n",
 			  length, type);
 		return -ENOMEM;
 	}
@@ -1950,32 +1973,32 @@ static int brcmf_pcie_add_signature(struct brcmf_pciedev_info *devinfo,
 
 	memset(&memmap, 0, sizeof(memmap));
 
-	memmap.sig_end = *address;
-	err = brcmf_alloc_rtlv(devinfo, address, BRCMF_SIG_MAGIC, fwsig->size);
+	memmap.sig.end = *address;
+	err = brcmf_alloc_rtlv(devinfo, address, BRCMF_FW_SIG_MAGIC, fwsig->size);
 	if (err)
 		return err;
-	memmap.sig_start = *address;
+	memmap.sig.start = *address;
 
-	memmap.vstatus_end = *address;
+	memmap.vstatus.end = *address;
 	err = brcmf_alloc_rtlv(devinfo, address, BRCMF_VSTATUS_MAGIC, BRCMF_VSTATUS_SIZE);
 	if (err)
 		return err;
-	memmap.vstatus_start = *address;
+	memmap.vstatus.start = *address;
 
 	err = brcmf_alloc_rtlv(devinfo, address, BRCMF_MEMMAP_MAGIC, sizeof(memmap));
 	if (err)
 		return err;
 
-	memmap.fw_start = devinfo->ci->rambase;
-	memmap.fw_end = memmap.fw_start + devinfo->fw_size;
-	memmap.heap_start = memmap.fw_end + BRCMF_BL_HEAP_START_GAP;
-	memmap.heap_end = memmap.heap_start + BRCMF_BL_HEAP_SIZE;
+	memmap.fw.start = devinfo->ci->rambase;
+	memmap.fw.end = memmap.fw.start + devinfo->fw_size;
+	memmap.heap.start = ALIGN(memmap.fw.end + BRCMF_BL_HEAP_START_GAP, 4);
+	memmap.heap.end = memmap.heap.start + BRCMF_BL_HEAP_SIZE;
 
-	if (memmap.heap_end > *address)
+	if (memmap.heap.end > *address)
 		return -ENOMEM;
 
-	memcpy_toio(devinfo->tcm + memmap.sig_start, fwsig->data, fwsig->size);
-	memset_io(devinfo->tcm + memmap.vstatus_start, 0, BRCMF_VSTATUS_SIZE);
+	memcpy_toio(devinfo->tcm + memmap.sig.start, fwsig->data, fwsig->size);
+	memset_io(devinfo->tcm + memmap.vstatus.start, 0, BRCMF_VSTATUS_SIZE);
 	memcpy_toio(devinfo->tcm + *address, &memmap, sizeof(memmap));
 
 	err = brcmf_alloc_rtlv(devinfo, address, BRCMF_END_MAGIC, 0);